Whole house generator installers in Ohio
Power, cost, permits & sizing ↓Ohio
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123 Ohio companies install and service home standby generators, including 37 generator specialists and factory-authorized dealers. Company and brand details come from each company's own website — for warranty work, confirm current dealer status with the manufacturer directly.
123 companies
Generator specialists (9)
Generator One Generator specialist
GenSet1 LLC Generator specialist
Mid-Ohio Generators Generator specialist
Miller Sales and Service Inc Generator specialist
Ohio Generator Systems Generator specialist
PowerOn Generators Generator specialist
Professional Engine Systems Inc Generator specialist
Wired Up Electrical Services, LLC Generator specialist
Electrical contractors that install generators (48)
Advanced HVAC and Electrical Solutions Electrical contractor
All Electric Inc. Electrical contractor
ANR Electric Electrical contractor
Athens Electric Electrical contractor
Blind & Sons Electrical contractor
Buckeye Electric (614electrician.com) Electrical contractor
Carsonca Electrician Electrical contractor
Champion City Handyman Electrical contractor
Chase Electric Electrical contractor
Clover Electric, Inc Electrical contractor
Cougar Electric Contracting Electrical contractor
CT Electrical Services Electrical contractor
Cubbage Electric LLC Electrical contractor
Current Electric Electrical contractor
Echler Electric Electrical contractor
Erb Electric Electrical contractor
Five Star Columbus Electrical Electrical contractor
Five Star Dayton Electrical Electrical contractor
Garber Electric Electrical contractor
Goods Electric, Heating & Air Electrical contractor
Great Lakes Electric Electrical contractor
Hannah Electric Electrical contractor
Haven Electrical contractor
Heart of Ohio HVAC, Plumbing & Electrical Electrical contractor
HELP Plumbing, Heating, Cooling, Electric & Drains Electrical contractor
Impressive Electric Electrical contractor
Jahn Electric Electrical contractor
Jennings Heating, Cooling, Plumbing & Electric Electrical contractor
MK Electric, LLC Electrical contractor
Northern Electric LLC Electrical contractor
Nothin' To It Electrical Electrical contractor
Ohio Electric Services Electrical contractor
Ohio Power Solutions Electrical contractor
Paff Electric and Solar Electrical contractor
Peterman Brothers Heating, Cooling, Plumbing & Electrical Electrical contractor
Pro One Electric & Generators Electrical contractor
PTI Electric, Plumbing, & HVAC Electrical contractor
R&T Yoder Electric, Inc. Electrical contractor
Safe Electric LLC Electrical contractor
Sparks Electric Service, LLC Electrical contractor
Springfield Acme Electric Company Electrical contractor
Standby Energy Solutions, LLC Electrical contractor
Surge Electric Electrical contractor
Survivor Electric Electrical contractor
Transtar Electric Electrical contractor
Tri-County Electric Service Electrical contractor
Wattkins Electric Electrical contractor
We Power Electric LLC Electrical contractor
HVAC & plumbing contractors that install generators (38)
A-Abel HVAC / plumbing contractor
Ables, Inc. HVAC / plumbing contractor
Accurate Heating, Cooling & Plumbing HVAC / plumbing contractor
Advanced Heating & Cooling HVAC / plumbing contractor
Aire-Flo Heating, Cooling & Generators HVAC / plumbing contractor
American Heating & Air Conditioning HVAC / plumbing contractor
Anderson Heating, Cooling, Plumbing & Electric HVAC / plumbing contractor
Apex Pros Plumbing, Electrical, Heating & Air HVAC / plumbing contractor
Apollo Home HVAC / plumbing contractor
Arco Comfort Air (ARCO Home Services) HVAC / plumbing contractor
Area Energy & Electric, Inc. HVAC / plumbing contractor
Bartels Heating & Cooling HVAC / plumbing contractor
Beltz Home Service Co. HVAC / plumbing contractor
Brandon Heating & Air Conditioning HVAC / plumbing contractor
Bryant Heating & Cooling HVAC / plumbing contractor
Buckeye Heating, Cooling, Plumbing & Electrical HVAC / plumbing contractor
Clayton Heating & Air Conditioning Co. HVAC / plumbing contractor
CRT Mechanical HVAC / plumbing contractor
David White Services HVAC / plumbing contractor
Eco Plumbers, Heating, Cooling & Electrical HVAC / plumbing contractor
ElectriCool HVAC / plumbing contractor
Emergency Plumbing Heating Air HVAC / plumbing contractor
Five Star Home Services HVAC / plumbing contractor
Gorjanc Home Services HVAC / plumbing contractor
Home Experts Heating Air Plumbing HVAC / plumbing contractor
Legacy Heating & Cooling HVAC / plumbing contractor
Lenox Heating & Cooling HVAC / plumbing contractor
P.K. Wadsworth Heating & Cooling HVAC / plumbing contractor
Performance Heating and Cooling HVAC / plumbing contractor
Schilling Propane HVAC / plumbing contractor
Schneller Knochelmann Plumbing, Heating, & Air HVAC / plumbing contractor
Seiter Services LLC HVAC / plumbing contractor
Shanklin Heating, Air Conditioning, & Electric HVAC / plumbing contractor
Stack Heating, Cooling, Plumbing & Electric HVAC / plumbing contractor
Thomas & Galbraith Heating, Cooling, Plumbing & Electrical HVAC / plumbing contractor
Twin Oaks Refrigeration (Twin Oaks HVAC) HVAC / plumbing contractor
Wilson Heating & Air Conditioning (Central) HVAC / plumbing contractor
Wilson Plumbing, Heating, Cooling, and Electric HVAC / plumbing contractor
Power in Ohio
Ohio knows what a bad outage looks like — the largest blackout in North American history started here. On August 14, 2003, an undertrimmed tree and a failed control-room alarm near Cleveland and Akron cascaded into a collapse that left about 50 million people dark across the Midwest, the Northeast, and Ontario. Five years later the remnants of Hurricane Ike blew through with 75 mph gusts and almost no rain and knocked out power to roughly two million Ohio customers — still the largest outage in state history — and the June 2012 derecho did it again to a million more. Add ice storms, lake-effect snow off Lake Erie, and the summer storms that flood a basement the moment the sump pump quits, and a whole-home standby generator earns its place: it starts on its own within seconds and keeps the furnace, sump pump, refrigerator, and medical equipment running on natural gas or propane until the utility catches up.
Generator permits & codes in Ohio
- Who issues permits
- Your local building department issues the permit and inspects the work under the Residential Code of Ohio; departments are certified by the Ohio Board of Building Standards. Electrical licensing is two-tier: the state Construction Industry Licensing Board licenses electrical contractors for commercial work, while electrical work on a one- to three-family home is registered and regulated by the city or county, so the exact requirement depends on your jurisdiction.
- Timeline
- Varies by jurisdiction. Most residential generator permits are issued over the counter or online without plan review, with a single electrical inspection (plus a mechanical/gas inspection where a gas line is run) once the work is complete.
- Code in force
- The 2023 National Electrical Code, adopted with Ohio amendments and effective March 1, 2024 for both the Ohio Building Code and the Residential Code of Ohio. It replaced the 2017 NEC that had been in force previously.
- Major utilities
- Four investor-owned utilities cover most of the state under PUCO-regulated territories: FirstEnergy's Ohio companies — Ohio Edison in the northeast, The Illuminating Company around Cleveland, and Toledo Edison in the northwest; AEP Ohio across Columbus and much of central Ohio; Duke Energy in the Cincinnati area; and AES Ohio around Dayton — with electric cooperatives and municipal systems elsewhere. A permanently installed generator must be wired through a transfer switch by a qualified electrician so it can never backfeed the grid and endanger line crews.
- Worth knowing
- The largest blackout in North American history began in Ohio. On August 14, 2003, a high-voltage line near Cleveland and Akron sagged into an undertrimmed tree, and a failed alarm in the utility's control room kept operators from catching it before it cascaded — ultimately cutting power to about 50 million people across the Midwest, the Northeast, and Ontario. It's a reminder that the grid can fail far from your own street and still leave you dark.
Common questions about whole house generators in Ohio
How much does a standby generator cost installed in Ohio?
For a typical Ohio home, budget roughly $9,000–$15,000 all-in for a
whole-house air-cooled standby unit (about 18–26 kW): the
generator, the automatic transfer switch, a pad, the fuel hookup, the
electrical work, and permits. A smaller essentials-only unit
(10–14 kW) runs about $6,000–$9,000, and liquid-cooled units for
large homes climb past $20,000. Most Ohio metros — Columbus,
Cleveland, Cincinnati, Toledo, Akron, Dayton — have natural-gas
service, which is the easiest fuel for a standby unit; homes without a
gas main run on a propane tank that adds to the up-front cost.
Do I need a permit to install a generator in Ohio?
Yes. A standby generator install needs an electrical permit — and
usually a gas permit — from your local building department, followed by
an inspection under the Residential Code of Ohio. Licensing is handled
locally for houses: Ohio's state electrical contractor license (from
the Construction Industry Licensing Board) governs commercial work,
while electrical work on a one- to three-family home is registered and
regulated by your city or county, so requirements vary by jurisdiction.
A reputable installer knows your local rules, holds the right
registration, and pulls the permits as part of the job — treat anyone
who offers to skip the permit as a red flag.
What size generator do I need in Ohio?
That comes down to a load calculation, which any good installer runs
during the site visit. Ohio has three loads worth calling out. Winter
heating is the big one: even a gas furnace needs electricity for its
blower and ignition, and heat-pump homes lean on electric-resistance
backup strips that pull hard on a cold night. The sump pump is the
second — the storms that knock out power are the same ones flooding the
basement, and a battery backup only lasts hours. Summer AC is the
third. Essentials only fits in 10–14 kW; a typical whole house
lands at 18–26 kW; a soft-start on the AC can keep the unit
smaller.
Generac, Kohler, Cummins, or Briggs & Stratton — does the brand matter?
All four make reliable home standby units; the installer and the
service relationship afterward matter more than the badge. Generac has
the largest dealer network in Ohio, so parts and warranty techs are
easy to find across the major metros and out into the rural counties;
Kohler and Cummins have strong dealers in the cities. A
factory-authorized dealer can perform warranty service on its own
brand, which is worth weighing when two brands otherwise look alike.
Use the brand pages here to see who installs and services each one near
you.
How long does installation take?
The on-site work is usually one to two days once the unit is in hand:
set the pad, run the gas and electrical, mount the transfer switch, and
commission it. The calendar time is longer — a site visit and quote,
then permitting, then the inspection. After a big windstorm or derecho
that timeline stretches, because every house on the block wants a
generator and an installer at the same moment. Ordering ahead of the
summer storm season, rather than the week after the lights come back,
is how you avoid competing for both the unit and the crew.
What maintenance does a standby generator need?
An annual service — oil and filter, spark plugs on schedule, a battery
check, and a load test — on top of the weekly self-test the unit runs
on its own. Ohio's cold winters are hard on starting batteries, so the
battery check matters here; the point is to prove the unit works before
the season it's needed, not during it. Many Ohio installers listed here
offer maintenance plans, and several service brands they don't sell.
Neglected maintenance is the most common reason a generator fails to
start when the grid finally goes down.